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Message-Id: <20221218101901.373450-1-42.hyeyoo@gmail.com>
Date: Sun, 18 Dec 2022 19:18:57 +0900
From: Hyeonggon Yoo <42.hyeyoo@...il.com>
To: Christoph Lameter <cl@...ux.com>,
Pekka Enberg <penberg@...nel.org>,
David Rientjes <rientjes@...gle.com>,
Joonsoo Kim <iamjoonsoo.kim@....com>,
Andrew Morton <akpm@...ux-foundation.org>,
Vlastimil Babka <vbabka@...e.cz>,
Roman Gushchin <roman.gushchin@...ux.dev>
Cc: Hyeonggon Yoo <42.hyeyoo@...il.com>,
HORIGUCHI NAOYA(堀口 直也)
<naoya.horiguchi@....com>, Joe Perches <joe@...ches.com>,
Petr Mladek <pmladek@...e.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Matthew WilCox <willy@...radead.org>,
David Hildenbrand <david@...hat.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: [RFC v3 0/4] move PG_slab flag to page_type
RFC v2:
https://lore.kernel.org/linux-mm/20221106140355.294845-1-42.hyeyoo@gmail.com/
This patch series moves PG_slab page flag to page_type,
freeing one bit in page->flags and introduces %pGt format
that prints human-readable page_type like %pGp for printing page flags.
See changelog of patch 2 for more implementation details.
Thanks everyone that gave valuable comments.
v2 -> v3:
- dropped show_page_types() in a thought that it is not interesting
to track refcount of non-usermapped pages.
- added patch 1 that cleans up MF_MSG_SLAB in hwpoison
- split implementation and application of %pGt to separate patches.
- instead of printing "no page_type for ..." in %pGt, just print
'0x<value>()' for a page that does not use page_type field.
Hyeonggon Yoo (4):
mm/hwpoison: remove MF_MSG_SLAB from action_page_types
mm: move PG_slab flag to page_type
mm, printk: introduce new format %pGt for page_type
mm/debug: use %pGt to print page_type in dump_page()
Documentation/core-api/printk-formats.rst | 3 +-
fs/proc/page.c | 13 ++--
include/linux/mm_types.h | 11 ++--
include/linux/page-flags.h | 77 ++++++++++++++++-------
include/trace/events/mmflags.h | 8 ++-
kernel/crash_core.c | 3 +-
lib/test_printf.c | 26 ++++++++
lib/vsprintf.c | 21 +++++++
mm/debug.c | 7 +++
mm/internal.h | 1 +
mm/memory-failure.c | 10 ---
mm/slab.c | 44 ++++++++-----
mm/slab.h | 3 +-
13 files changed, 162 insertions(+), 65 deletions(-)
--
2.32.0
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